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Running Poorly At Idle

Discussion in 'Early CJ5 and CJ6 Tech' started by WorkInProgress, May 10, 2016.

  1. May 24, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    I'm thinking that maybe today I should go get a carburetor kit at O'Reilly for lunch today
     
  2. May 24, 2016
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    You ought to get a quality kit, specified for the Jeep application from a supplier who understands what that means. The YF was used on many vehicles and a lot of universal kits do not include the right parts for a jeep.

    For instance, a "rough service" float needle, and reduced orifice inlet.
     
  3. May 24, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    Do you have a recommendation on a superior kit?

    Mostly I was thinking I'd need it for the gaskets
     
  4. May 24, 2016
    Focker

    Focker That's a terrible idea...What time? Staff Member

    WA
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    Scott,

    Call Baxter's in downtown Kennewick.
     
  5. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    "The Carburetor Shop" that was linked to previously will provide everything that should go with your carb, or maybe the place Focker is mentioning has the proper kits?
     
  6. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    One other thing that I don't recall being mentioned is spark plug wires. What is the condition of them?
     
  7. May 24, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    I haven't replaced the plug wires since about 3 years ago during the previous tune up

    I do have a 48 cj2a that the spark plug wires should be able to change over for testing even though that jeep is 6v

    I think baxters also sells the same parts as oreilly and napa and all the others probably the same maker but I could check
     
  8. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    The Carburetor Shop supplies kits that are specific to the carburetor you have, generic kits may or may not have the proper replacement parts. If they will reach swap wires one at a time since it's certainly a quick and easy check to eliminate things, although I lean heavily towards the carb being an issue. Sitting wreaks havoc on carburetors, I know that for a fact.
     
  9. May 24, 2016
    scoutpilot

    scoutpilot Member

    Asheboro, NC
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    In order to assure that you get the correct kit, make note of the model number on the vertical flange between the linkage and the carb body. Order your kit using that number. Failure to do so will see you getting a kit for a Ford 300 ci 6 cylinder. I guarantee it.
     
  10. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I agree, getting the right parts could be pure luck. I know The Carburetor Shop asked for that specifically.
     
  11. May 24, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    So here is the latest video in my problematic saga

    [​IMG]
     
  12. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    So, you put the Solex on and all appears good. Correct?
     
  13. May 24, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    Yes mostly. You guys jogged my memory that years ago when I bought the jeep, it came with this solex installed. So I dug the solex out of the garage and installed it with a new base gasket. And it fired right up and ran pretty good. So I dialed it in with the vacuum gauge and the tach and it runs perfect and nice and low. So that seems to tell us that the surging problem is something to do with the carb so I guess I will tear it down and clean and inspect

    But using this solex the original problem is gone but solex has a new problem. After shutting it off the carb continues to deliver fuel which puddles on top of the throttle plate and then come out the throttle shaft leaking fuel everywhere. So I'm thinking that is probably stuck float valve or junk in it. But it might also be I'm running 4 psi fuel pressure and the solex requires less, so it might be normal like this until a regulator is installed.

    I could probably test the overpowering the valve pressure idea by running jeep then shutting it off. Then cracking loose the fuel line to relieve pressure and if it stops flowing into throat after shut off that probably proves it
     
  14. May 24, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    When it's shut off the vapor pressure might be overcoming the needle valve. Vapor pressure would be greater of course than the pump pressure. I think it would flood out if the pump pressure was overcoming the needle valve when running.
     
  15. May 25, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    What's the remedy for this? I can't have the temporary solex leaking fuel like this it's a fire waiting to happen until my Carter is fixed up again
     
  16. May 25, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Fuel pressure regulator like you mentioned is my first thought. Plus take the top off of the to see what is going on, maybe lower the float setting a tad?
     
  17. May 25, 2016
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    I forgot to mention when the solex was flooding, only after engine was turned off, I could hear it boiling or purculating. And when this was happening if I move throttle WOT with engine still off, it would smoke in the carb throat white smoke looked like someone with an
    e-cigarette puffing
     
  18. May 25, 2016
    scoutpilot

    scoutpilot Member

    Asheboro, NC
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    "But it might also be I’m running 4 psi fuel pressure and the solex requires less, so it might be normal like this until a regulator is installed. "
    Solex doesn’t like anything above 2 psi. And it will tell you so.

    "Fuel pressure regulator like you mentioned is my first thought.”
    Just try this first.

    “And when this was happening if I move throttle WOT with engine still off, it would smoke in the carb throat white smoke looked like someone with an"
    This is normal. That is gasoline vapor.
     
  19. May 25, 2016
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    I would try to solve one carb at a time, instead of opening a whole new can of worms.
     
  20. May 25, 2016
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I agree. I'm actually a bit surprised that the Solex works good since it sat for a long time.
     
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